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Panda Protection

Virus Encyclopedia

Welcome to the Virus Encyclopedia of Panda Security.

MoonLight.N

Threat LevelModerate threatDamageHighDistributionNot widespread
Common name:MoonLight.N
Technical name:W32/MoonLight.N.worm
Threat level:Low
Type:Worm
Effects:   It spreads and affects other computers. It carries out actions that decrease the security level of the computer. It uses stealth techniques to avoid being detected by the user. It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies. It spreads , across the Internet.
Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95/3.X; IIS

First detected on:Feb. 16, 2007
Detection updated on:Feb. 16, 2007
StatisticsNo

Brief Description 

    

MoonLight.N is a worm that spreads by copying itself, without infecting other files.

 

It reduces the security level of the computer: it terminates processes belonging to security tools, such as antivirus programs and firewalls, leaving the computer defenseless against attacks from other malware; it changes the security settings of Internet Explorer, decreasing its security level; it changes system permissions, decreasing the security level.

 

It uses stealth techniques to avoid being detected by the user:

  • It terminates processes corresponding to several security tools, such as antivirus programs and firewalls, to prevent detection.
  • It injects itself in running processes.

 

It uses several methods in order to avoid detection by antivirus companies:

  • It prevents scanning tools from running, such as Windows Registry Editor, FileMonitor, etc.

 

MoonLight.N uses the following propagation or distribution methods:

  • Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.
  • Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.